Alert archive / South Carolina / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 46, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Jul 31, 2021, 5:04 PM EDT for Berkeley County, Charleston County, South Carolina. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 31, 2021, 5:04 PM EDT (21:04 UTC)
- Expired
- Jul 31, 2021, 5:38 PM EDT
- In force
- 34 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Berkeley County, SC, Charleston County, SC
The radar
The Charleston,SC radar (KCLX), 115 km from the middle of the area, began a volume at 21:08 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 9.1 hours before the alert went out and 15 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 2518 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 924 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
899 WUUS52 KCHS 312104 SVRCHS SCC015-019-312200- /O.NEW.KCHS.SV.W.0046.210731T2104Z-210731T2200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Charleston SC 504 PM EDT Sat Jul 31 2021 The National Weather Service in Charleston has issued a * Severe Thunderstorm Warning for portions of... Charleston County in southeastern South Carolina... Berkeley County in southeastern South Carolina... * Until 600 PM EDT. * At 504 PM EDT, a severe thunderstorm was located near Wando, and is nearly stationary. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to trees and powerlines. * Locations impacted include... Mount Pleasant, Goose Creek, Daniel Island, Wando, Cainhoy and Mount Pleasant Regional Airport. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. Report damage directly to the Charleston National Weather Service at 888-383-2024 when it is safe to do so. && LAT...LON 3297 7997 3306 7991 3300 7968 3287 7981 TIME...MOT...LOC 2104Z 278DEG 3KT 3300 7987 HAIL...0.75IN WIND...60MPH $$
2 follow-up statements
898 WWUS52 KCHS 312128 SVSCHS Severe Weather Statement National Weather Service Charleston SC 528 PM EDT Sat Jul 31 2021 SCC015-019-312200- /O.CON.KCHS.SV.W.0046.000000T0000Z-210731T2200Z/ Charleston SC-Berkeley SC- 528 PM EDT Sat Jul 31 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR CHARLESTON AND BERKELEY COUNTIES... At 528 PM EDT, a severe thunderstorm was located near Wando, and is nearly stationary. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to trees and powerlines. This severe thunderstorm will remain over mainly rural areas of Charleston and Berkeley Counties, including the following locations: Moreland...Woodland Landing...Charity...Woodland...Cote Bas Landing and Hagan. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. Report damage directly to the Charleston National Weather Service at 888-383-2024 when it is safe to do so. && LAT...LON 3300 7994 3306 7991 3300 7968 3292 7977 TIME...MOT...LOC 2128Z 278DEG 3KT 3300 7985 HAIL...<.75IN WIND...60MPH $$
296
WWUS52 KCHS 312138
SVSCHS
Severe Weather Statement
National Weather Service Charleston SC
538 PM EDT Sat Jul 31 2021
SCC015-019-312148-
/O.CAN.KCHS.SV.W.0046.000000T0000Z-210731T2200Z/
Charleston SC-Berkeley SC-
538 PM EDT Sat Jul 31 2021
...THE SEVERE THUNDERSTORM WARNING FOR PORTIONS OF CHARLESTON AND
BERKELEY COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore the warning has been cancelled. However heavy rain is
still possible with this thunderstorm.
LAT...LON 3300 7994 3306 7991 3300 7968 3292 7977
TIME...MOT...LOC 2135Z 278DEG 3KT 3300 7984
$$The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 8:01 PM EDT | Heat Advisory | CHS | Berkeley, Colleton, Dorchester | 24 hr |
| Jul 31, 3:25 PM EDT | Special Weather Statement | CHS | Charleston | 35 min |
| Jul 31, 3:50 PM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston | 115 min |
| Jul 31, 4:00 PM EDT | Special Weather Statement | CHS | Berkeley | 30 min |
| Jul 31, 4:01 PM EDT | Small Craft Advisory | CHS | 32 hr | |
| Jul 31, 4:06 PM EDT | Special Weather Statement | CHS | Berkeley | 24 min |
| Jul 31, 4:29 PM EDT | Special Weather Statement | CHS | Colleton | 31 min |
| Jul 31, 4:38 PM EDT | Special Weather Statement | CHS | Charleston | 37 min |
| Jul 31, 4:51 PM EDT | Special Marine Warning | CHS | 57 min | |
| Jul 31, 4:53 PM EDT | Special Weather Statement | CHS | Charleston | 37 min |
| Jul 31, 5:11 PM EDT | Areal Flood Advisory | CHS | Berkeley, Charleston | 36 min |
| Jul 31, 5:26 PM EDT | Special Weather Statement | CHS | Berkeley | 34 min |
| Jul 31, 5:37 PM EDT | Special Weather Statement | CHS | Colleton | 23 min |
| Jul 31, 5:59 PM EDT | Special Weather Statement | CHS | Colleton | 31 min |
| Jul 31, 6:02 PM EDT | Special Weather Statement | CHS | Berkeley | 28 min |
| Jul 31, 6:38 PM EDT | Special Weather Statement | CHS | Berkeley | 37 min |
| Jul 31, 6:46 PM EDT | Special Weather Statement | CHS | Dorchester | 29 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.